body {
    background-image: url("../static/小丑 Joker (2019)4k壁纸_彼岸图网.jpg");
}

#form {
    width: 450px;
    height: 300px;
    margin: 100px 100px;

}

#form div:first-child {
    font-weight: bolder;
    text-align: left;
    margin: 0 auto;
}

#form div a:nth-child(1) {
    margin-left: 50%;
}

#form div a {
    margin-left: 10%;
    text-decoration: none;
}

#form form {
    background-color: white;
    border-radius: 10px;
    border: 1px solid black;
    padding: 30px;
}